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Title: A fiber optic synchronization system for LUX

Abstract

The LUX femtosecond light source concept would support pump-probe experiments that need to synchronize laser light pulses with electron-beam-generated X-ray pulses to less than 50 fs at the experimenter endstations. To synchronize multiple endstation lasers with the X-ray pulse, we are developing a fiber-distributed optical timing network. A high frequency clock signal is distributed via fiber to RF cavities (controlling X-ray probe pulse timing) and mode-locked lasers at endstations (controlling pump pulse timing). The superconducting cavities are actively locked to the optical clock phase. Most of the RF timing error is contained within a 10 kHz bandwidth, so these errors and any others affecting X-ray pulse timing (such as RF gun phase) can be detected and transmitted digitally to correct laser timing at the endstations. Time delay through the fibers will be stabilized by comparing a retro-reflected pulse from the experimenter endstation end with a reference pulse from the sending en d, and actively controlling the fiber length.

Authors:
; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Director, Office of Science. Office of High Energy and Nuclear Physics (US)
OSTI Identifier:
828015
Report Number(s):
LBNL-55661
R&D Project: DSPSAF; TRN: US0403629
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Conference
Resource Relation:
Conference: 2004 European Particle Accelerator Conference, Lucerne (CH), 07/05/2004--07/09/2004; Other Information: PBD: 30 Jun 2004
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATORS; CAVITIES; FIBER OPTICS; FIBERS; LASERS; LIGHT SOURCES; PROBES; SYNCHRONIZATION; TIME DELAY

Citation Formats

Wilcox, R.B., Staples, J.W., and Doolittle, L.R. A fiber optic synchronization system for LUX. United States: N. p., 2004. Web.
Wilcox, R.B., Staples, J.W., & Doolittle, L.R. A fiber optic synchronization system for LUX. United States.
Wilcox, R.B., Staples, J.W., and Doolittle, L.R. Wed . "A fiber optic synchronization system for LUX". United States. doi:. https://www.osti.gov/servlets/purl/828015.
@article{osti_828015,
title = {A fiber optic synchronization system for LUX},
author = {Wilcox, R.B. and Staples, J.W. and Doolittle, L.R.},
abstractNote = {The LUX femtosecond light source concept would support pump-probe experiments that need to synchronize laser light pulses with electron-beam-generated X-ray pulses to less than 50 fs at the experimenter endstations. To synchronize multiple endstation lasers with the X-ray pulse, we are developing a fiber-distributed optical timing network. A high frequency clock signal is distributed via fiber to RF cavities (controlling X-ray probe pulse timing) and mode-locked lasers at endstations (controlling pump pulse timing). The superconducting cavities are actively locked to the optical clock phase. Most of the RF timing error is contained within a 10 kHz bandwidth, so these errors and any others affecting X-ray pulse timing (such as RF gun phase) can be detected and transmitted digitally to correct laser timing at the endstations. Time delay through the fibers will be stabilized by comparing a retro-reflected pulse from the experimenter endstation end with a reference pulse from the sending en d, and actively controlling the fiber length.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jun 30 00:00:00 EDT 2004},
month = {Wed Jun 30 00:00:00 EDT 2004}
}

Conference:
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